Improvement in apparatus for evaporating brine



D. BRIGHAIVL.

Evaporating .Pan. No. 20,034. Patented Apr. 27. 1858.

AM. PHDTO-LKTHO-ML N.Y. (OSBDRNES PROCESS.)

the pan 0.

I NITE PATENT FFICEQ.

DENNIS BBIGHAM, OF NEW YORK, N. Y.

IMPROVEMENT IN APPARATUS FOR EVAPORATING' BRINE.

Specification forming part of Letters Patent No. 20,034, dated April 27, 1858.

To aZZ whom it may concern.-

Be it known that I, DnNNIs BRIGIIAM, of thecity, county, and State of New York, have invented certain new and usefulImprovements in Apparatus for Evapor'ating and Purifying Salt-Brine; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

In order that others may be able to construct and use my invention, I will describe it as follows: v

The evaporating and purifying (depressed at the center) boiler B B is filled to about ten or twelve inches over the top of the heater N with pure strong brine,whichis set to boiling by the steam from the generator through the connecting-pipe P to the heater N.

As the exhalation of the water takes place, the brine becomes stronger in the boiler B B, which is replenished from the cistern of crude brine D by means of a force-pump, which forces the crude brine through pipe 0 into the lower sec tion of the depressed boiler B B, where it be comes mixed with the strong brine. This causes a separation or crystallization of the impurities-such as muriates of lime, magnesia, &c'.whieh fall to the bottom of boiler 13. After the lower section of the boiler 13 B is 'filled with the impurities up to or. near the depressed neck 0, it is-taken out through the man-hole -h. When the brine in the upper part of boiler 13 attains the strength of 19 to 20 Baufne, it is drawn or forced through a pipe or spent, 5/, into pans 0'0" 0. The liquor in the pan 0 is boiled rapidly under a strong pressure by means of the escaping steam from the boiler B, which passes through pipe L into the heater (and not the pan) which is placed in the first pan, 0, where the salt becomes erystallizedand deposited at the bottom thereof.- There being in a quiescent state, it forms in large pure crystals, after which it is removed through-the man-hole'at the top of The second pan is filled with pure brine from the depressed boiler B 13, similar to the first pan, 0, and the evaporated steam from pan 0 is let into the heater of c", together with the steam which has been used in the heater of 0, which passes out at the bottom of the heater in 0' through pipe K intr the top of the heater in c, and so on to con denser M, which is placed in the crude-brim cistern D. The great desideratumis to pas: the evaporated steam through the heater: very rapidly by means of the powerful con denser M, to which is attached a small steam pump to discharge the condensed steam am keep up a perfect vacuum in the condense. while it, (the condenser,) by means of tlr vacuum, draws the evaporated steamrapidl; through the heaters, at the same time heating the brine in cistern D. After the salt is re moved from the pans e 0 0 it. is taken-awa; to dry.

The use of tubular heaters for evaporating purposes is not new, when combined with th mode of conveying the escape-steam from th pans to the condenser and for heating build ings, did; but the arrangement of. a set e tubular heaters. so that each heater will dis charge its evaporated steam into the nor heater at the top, which is below the level c the bottom of the first heater, the third i below the level of the bottom of the second and so on, in combination with a boiler fasl'l ioned or formed with a depression at its cer ter 0, for the ostensible purpose of purifyin salt, I believe to be novel and useful.

I do not confine myself to any specific fol-1 of boiler I3 13, excepting the depression a whe employed as above set forth.

I disclaim all the separate parts of the abov described apparatus; but

What I' claim as novel, and what I wish i secure by Letters Patent of the United State: 1s-

The arrangement of the stea-m heaters N I N N with the boiler B B, pans c c a, an cistern 1), rcspectivel y, in the manner set fortl' and for the purpose specified, as shown in th drawings, so that the pans and cistern ma be heated by one steam-pipe, K K K, sul stantially as described. c

In testimony whereof I hereunto subscrih my name in the presence of two witnesses.

DENNIS B RIGIIAM. 

